The German health insurance system is separated between the private and public sector by a social security ceiling. To reduce the risk selection of the current system we discuss the implications of the conversion of the upper income limit into a provision limit. Using a generational accounting approach, we find that such a conversion has a negative effect in respect of sustainability. In addition, we present the idea of a transfer premium, which reflects the value of the analyzed group of insurants. Our results show that with a transfer premium or in a system of lump-sum-premiums, the provision limit would have positive implications and would leave the German system more sustainable.